Automatic radiolog



July 21, 1925.

L. E. RENNEY wrom'nc mmonoe Filed Jan. 26, 1925 1NVENTOR E. Renney BYMA-A. a ATTORNEY Patented July 21, 1925.

UNITED sures PATENT OFFICE.

nypn'rozg n. may, or" s'rocx'fron, oALmomIIa.

AUTOMATIC aamonoe.

7 Application filed Ianuary 26, 1825. Serial No. 4,904.-

To all whom it amber n:

Re it known that I, LYLETON E. RENNEY, a CilZIZGIL of'the 'UnitedStates, residing at Stockton, county of San Joaquin, State of to providea readily attachable and detach-.

able and interchangeable chart element on which may be entered a logforreadily and quickly and automatically finding the different essary orbringing in any certain station through the receiving apparatus. I

By means of ,my improved log the finding positions on the dialsfor-different stations may be charted and when once definitely chartedfor the receiving set in a given loca tion, thereafter the log may beused in bringingin such stations without the "necessity of close tuningeach time it is desired to locate such station.

A further object of the invention is to produce a simple ,andinexpensive device and yet one which .wilt be exceedingly effective forthe purpose 'for which it-is designed.

These objects I accomplish by means of a such structure and relativearrangement of parts as will 'fully appear by a perusal of the followingspecification and claims.

In the drawings similar. characters of r'eference indicate correspondingparts in the several views: i Fig.- I is a perspective View of a frag-"inentary portion of a receiving apparatus showing my improved loginstalled thereon ready for use in service.

Fig. 2 is a -front elevation of the chart element arranged for use inconnection with the receiving set for logging the stations, as will behereinafter described.

log.

ositions of the condenser dials nee"- Fig. 3 is a perspective view of astraightedge element used in connection with my Fig. 4 is a fra entasectional view on aline'44ofFi ;1. ry

Referring now more particularlyto the characters of reference on thedrawings, the letter A designates a typical radio re-. celvmg apparatuson which are the condenser or station'finding dials 2, 3 and 4 resectively.

t is to be understood that my improved log may used in connectionwithreceiving apparatus'of various, kinds and of differentconstructions, the chart element-being differently constructed to beaccommodated thereto, as will be apparent from the followingdescription. 11 My My improved device comprises a. semiflexible element5 which may be of cardvh ard or any similar material which will idilyreceive writing upon its surfaceb 'i ne lower edge of the'element 5 iscutout:v ornotched as at 6', 7, and 8 respectively to provide. bearingand engaging'portions 'tofit over the bearing pins 9'fof the: dials 2,etc. The outer edge of the member 5 is prefer ably cut to becircumferential with of the dials 2, 3, and 4 respectivelyso that thefinished productisdn efi'ect' th ijeesemicircular elements 1", 1", and 1cennected together by adjacent webs 10, each of the semi-circularelements being of greater diameter than the diameter of the'dial inconnection with which it is to be used.

a A small straight edge 11 made of thin i celluloid or any other desiredmaterial is' "as will presently appear.

When the device is to be used in connec tion with the receiving setthe'dials are set on their pins so as toleave a slight space 12 betweenthe dial and the face of the panel of the receiving apparatus A. Myimproved chart element 5 is then inserted back of the dials and thenotches 6,'7 and 8 fitted over. the pins 9 of the dials. There being aclose fit between the dials themselves and the chart 5 and the panelofthe receiving set, this holds the chart from displacement straight edge11 adjacent each dial over :is then used to draw a line 15 from theinthe chart in the manner indicatedfor 4 Thus the chart element is inconstant fixed position with respect to the dials and even ceivingapparatus from a certain position of the latter is accomplished in thefollow- "ging all the stations which can'be Brought in over thereceiving apparatus other charts that the charts can be used at willforbringthe handling ofradio receiv transversely from the panel. Thenotches 6, 7 and 8 fitting over the pins act as bearing elements andprevent the displacement of the chart longitudinally of the panel.

also permit a much finer tuning cf the apparatus to be ,had, since aftercertain Well known stations have been logged then the apparatus can beused so that the index lines on the dials may be worked between the loglines of already charted and logged though different charts beinterchanged the stations and in this way different and thererelativeposition of each of the dials will tofore uncharted stations may Zllwaysbe the same whenever the charts are tuned in and logged. positioned backof the same. The faces of The celluloid members 11 being thin, they thedifferent circular elements 1, 1 and 1 are ruled with circular lines 13concentric with the dials, as a matter of convenience. although thesemay desired.

The use of the chart in logging the different stations to he brought inover the rebe dispensed with if handy when wanted. a

From the foregoing description it will he readily seen that I haveproduced such a the invention as set fortnherein.

While this specification sets forth in do ing manner: The elementfi, Wnothing tail the present and preferred construction written on its faceother an h 'e of the device, still in practice such devia lines, isinserted back of the dials and fitted {i s fr m uch d t il mayg'gsol'ted flj in position over the pins. The seve al d s as do not forma departure froinzthe spirit are then moved to tune or bring in a oerofthe invention, as defined by the appended tain station in the mostefiective manner. claim3 I Each of the dials has on it a master indicat-Having thus described my invention what ing index line 14. When thestation has I claim as new and useful and desire to been closely tunedthe user then moves the cure by Letters Patent is:

the face of its corresponding circular member to line up with thecorresponding index ber arranged to fit'immediately adjacent the line14. A pencil or other writing element tuning dials of the ap zaratus,said dials each hav ng an index-mark thereon adjse dex line on the dialacross the face of the chart. and the indicia 16 for the station whichhas been tuned in is then written ad- {acent that line. In thisconnection the ines 13 serve as guides for the user, sothat he may writethe indicia 16 in such a manner that the chart when. finally logged willhave a neat and symmetrical appearance. As each new ordifl'erent stationis'tuned in this operation is repeated until the chart is completelylogged with all-stations desired. If one chart is not suflicient forlogdial-circle, and point marks may be made op said chart adjacent thedial mark, and means perms ."lently mounted with the charts for enablingradiating lines to be drawn outwardly on the charts from the point-Iiiarks made thereon.

" ceiv ing apparatus comprising a chart memher arranged to fitimmediately adjacent each having an index-mark thereon adjamay beinterchangeable thelWlillL.

' It will be apparent that after all stations ferent stations said markwill aline with are duly logged III the manner'indlcated differentportions of the chart around'the ing in any of the loggedstationsinstantly on said chart adjacent the dial mark, and a withoutany close-tunin lines line up with the station lines made on axes of thedials, whereby on turning said the straight to register with eachpointlparticular to mark made on the chart, a substantially ring 111.

$.l' n which is desired .The utility'offmy improved log-gin nil chartwardly fromvsaid mark. ed in V apparatus, in 'COI1I'lT 6Ct10n.Wlbh radioreeeivin and its simplicity, interchangeahilrtygslnd V tus having aplurality of tuning positiveness will also 'beself evidentj'chart-elernent hein r arr-an.

In addition'to the obvious advantages to T ably jmounted bee: at a l thedials, and

will be entirely obvious to those is ials, such be gained by its use,the thereof .will means'for mrintaining a constant relation device assubstantially i illills the objectsoi cent its edge whereby when tuninfor dif- I H ferent stations said marl: will a fine with differentportions of the chart around the the tuning dials of the apparatus, saiddials radial line may 'be drawn on the chart 0ut- Asingle'logging chartelement for use rippers-- be gradually (lo/not occupy any appreciabletransverse space, and may thus be permanently associated with the chartso as to be always 1. A station logging means for radio ceivingapparatus comprising achart niern- 2. A stationlogging means for radiortecent its edge whereby when tuning for difdial-circle, and pointmarksmay be -made g of the apparatus straight edge for each chart'permanently, merely by moving the dials unt l theindex pivoted thereonadjacent the plane of the d to'be rernow between the chart and the dialsso that after logging indicia has been recorded on the chart inco-operation with each of the dials, thereafter such indicia will alwaysassume the same position relative to the dial corresponding theretowhenever the chart is inserted back of the dials.

10 having a plurality of tuning dials mounted to cause the 'chartelement to assume and 15 hold the sarrielposition relative to the dialseach time it is inserted behind the same.

In testimony whereof I affix my signature.

L-YLETON E. RENNEY.

